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Finding the Third Proportional to 15,711 and 34,187

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Solution

The third proportional to 15,711 and 34,187 is: 74,390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711 : 34,187 = 34,187 : x
  2. Step 2: Convert to fraction form
    15,711/34,187 = 34,187/x
  3. Step 3: Cross multiply
    15,711x = 34,187 × 34,187
  4. Step 4: Simplify right side
    15,711x = 1,168,750,969
  5. Step 5: Solve for x
    x = 1,168,750,969/15,711
  6. Step 6: Final answer
    x = 74,390.62

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.